BYD Battery-Box Premium HVS 5.1 vs Dyness Powerbox F-2.5

Compared with the Dyness Powerbox F-2.5, the BYD Battery-Box Premium HVS 5.1 has a 327% higher nominal voltage (204.8 V against 48 V), a 125% higher usable energy (5.12 kWh against 2.28 kWh) and a 94% higher weight (91 kg against 47 kg).

BYD Battery-Box Premium HVS 5.1 vs Dyness Powerbox F-2.5: datasheet values, one row per field
Battery storage	Battery-Box Premium HVS 5.1BYD	Powerbox F-2.5Dyness
Identity
Product name	Battery-Box Premium HVS 5.1	Powerbox F-2.5
Manufacturer	BYD	Dyness
Chemistry	LFP	LFP
Energy & power
Nominal energy	—	2.4kWh
Usable energy	5.12kWh (best)	2.28kWh
Max continuous charge power	—	—
Max continuous discharge power	—	2.4kW
Electrical
Nominal voltage	204.8V	48V
Voltage range	160–240V	42–54V
Max continuous current	25A	—
Performance
Round-trip efficiency	96%	—
Depth of discharge	—	90%
Cycle life	—	6000cycles
Operating temperature	-10–50°C	-20–55°C
Mechanical
Weight	91kg	47kg (best)
Dimensions W×D×H	762 × 585 × 298 (H×W×D)mm	555 × 210 × 928 (W×D×H)mm
IP rating	IP55	IP65
Warranty & certification
Design life or warranty	10years	—
Certifications	IEC 62619, UN 38.3, CE	UL 1973, IEC 62040, UN 38.3, CE

A dot marks the best number in a row: more energy, round-trip efficiency, depth of discharge, cycles and warranty; less weight. A dash means the value was not found in the datasheet's text.

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Values extracted from the manufacturers' published datasheets; verify against the source before relying on them.

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